Waste Heat Powered Ammonia Absorption Refrigeration Unit for LPG Recovery

Donald C, Energy Concepts Co. ; Lauber, Eric, Western Refining Co.

关键词: ABSORPTION;    AMMONIA;    AVAILABILITY;    COST OVERRUNS;    PETROLEUM;    REFINING;    REFRIGERATION;    SCHEDULES;    WASTE HEAT;    WATER waste heat utilization;    low level waste heat;    LPG Recovery;    absorption;    chilling;    flare;    light ends recovery;   

DOI  :  10.2172/932507
RP-ID  :  DOE/GO/13128
PID  :  OSTI ID: 932507
Others  :  TRN: US200815%%672

美国|英语

来源: SciTech Connect

【 摘 要 】

An emerging DOE-sponsored technology has been deployed. The technology recovers light ends from a catalytic reformer plant using waste heat powered ammonia absorption refrigeration. It is deployed at the 17,000 bpd Bloomfield, New Mexico refinery of Western Refining Company. The technology recovers approximately 50,000 barrels per year of liquefied petroleum gas that was formerly being flared. The elimination of the flare also reduces CO2 emissions by 17,000 tons per year, plus tons per year reductions in NOx, CO, and VOCs. The waste heat is supplied directly to the absorption unit from the Unifiner effluent. The added cooling of that stream relieves a bottleneck formerly present due to restricted availability of cooling water. The 350oF Unifiner effluent is cooled to 260oF. The catalytic reformer vent gas is directly chilled to minus 25oF, and the FCC column overhead reflux is chilled by 25oF glycol. Notwithstanding a substantial cost overrun and schedule slippage, this project can now be considered a success: it is both profitable and highly beneficial to the environment. The capabilities of directly-integrated waste-heat powered ammonia absorption refrigeration and their benefits to the refining industry have been demonstrated.